Self-frost-inhibition heat exchanger using condense substances

Abstract

The invention belongs to the technical field of refrigeration, and relates to a self-frost-inhibition heat exchanger using condense substances. The heat exchanger comprises fins, heat exchange pipes,a side plate, a top plate, a front cover plate, a fan, an atomization nozzle, a spraying hose, an electromagnetic valve, a plunger pump, a liquid storage tank and a water receiving disc. The condensesubstances are used for lowering the frost crystal forming temperature and increasing the frost layer density to reduce the heat resistance; an alcohol spraying and frost inhibiting unit is added on the basis of a common heat exchanger structure; and the spraying quantity of the condense substances is controlled under the frosting condition to achieve the frost inhibiting purpose by using condensed temperatures of the condense substances with different concentrations according to actual use conditions of the heat exchanger. The heat exchanger is reasonable in design and compact in structure, effectively controls the frosting quantity under the working conditions of low temperature and high humidity, guarantees efficient system operation, has the advantages of high efficiency, low cost, safe operation and convenience to use, and is suitable for such application fields as aerospace.

Description

technical field [0001] The invention belongs to the technical field of refrigeration, in particular to a self-frost suppression heat exchanger using condensable substances. Background technique [0002] Frosting phenomenon widely exists in various fields such as air-conditioning and refrigeration, refrigeration, aerospace, low-temperature storage and transportation, and chemical machinery. When the humid air encounters a cold surface that is lower than its dew point temperature, the water vapor in the humid air will condense into water droplets, and when the temperature of the cold surface is lower than the triple point temperature of water, frost is formed. The frost layer will generate thermal resistance and reduce the operating efficiency of the heat exchange equipment; the frost on the outer surface of the aircraft will disturb the aerodynamic shape, cause flight hazards, and even cause the aircraft to stall and affect flight safety; frost will also affect the vacuum of ...

AI Technical Summary

Problems solved by technology

The traditional defrosting methods represented by electric heating method, hot gas defrosting method, and reverse circulation method are to achieve the purpose of defrosting by adding external energy after the frost layer is formed. This method cannot fundamentally inhibit frosting, and The increased extra energy consumption reduces the system efficiency; and the method of hydrophilic and hydrophobic treatment on the surface of the material can only inhibit the formation of frost crystals in the early stage of frost formation, which has limitations in use

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